415 lines
No EOL
17 KiB
JavaScript
415 lines
No EOL
17 KiB
JavaScript
const _io = require('socket.io');
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const express = require('express');
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const {
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extractSessionInfo,
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extractPeerId,
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hasFilters,
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isValidSession,
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sortPaginate,
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getValidAttributes,
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uniqueAutocomplete
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} = require('../utils/helper');
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const {
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extractProjectKeyFromRequest,
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extractSessionIdFromRequest,
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extractPayloadFromRequest
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} = require('../utils/helper-ee');
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const {createAdapter} = require("@socket.io/redis-adapter");
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const {createClient} = require("redis");
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const wsRouter = express.Router();
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const UPDATE_EVENT = "UPDATE_SESSION";
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const IDENTITIES = {agent: 'agent', session: 'session'};
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const NEW_AGENT = "NEW_AGENT";
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const NO_AGENTS = "NO_AGENT";
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const AGENT_DISCONNECT = "AGENT_DISCONNECTED";
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const AGENTS_CONNECTED = "AGENTS_CONNECTED";
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const NO_SESSIONS = "SESSION_DISCONNECTED";
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const SESSION_ALREADY_CONNECTED = "SESSION_ALREADY_CONNECTED";
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const SESSION_RECONNECTED = "SESSION_RECONNECTED";
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const REDIS_URL = process.env.REDIS_URL || "redis://localhost:6379";
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const pubClient = createClient({url: REDIS_URL});
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const subClient = pubClient.duplicate();
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console.log(`Using Redis: ${REDIS_URL}`);
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let io;
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const debug = process.env.debug === "1" || false;
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const createSocketIOServer = function (server, prefix) {
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if (process.env.uws !== "true") {
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io = _io(server, {
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maxHttpBufferSize: (parseInt(process.env.maxHttpBufferSize) || 5) * 1e6,
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cors: {
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origin: "*",
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methods: ["GET", "POST", "PUT"]
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},
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path: (prefix ? prefix : '') + '/socket'
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});
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} else {
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io = new _io.Server({
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maxHttpBufferSize: (parseInt(process.env.maxHttpBufferSize) || 5) * 1e6,
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cors: {
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origin: "*",
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methods: ["GET", "POST", "PUT"]
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},
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path: (prefix ? prefix : '') + '/socket'
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// transports: ['websocket'],
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// upgrade: false
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});
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io.attachApp(server);
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}
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}
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const uniqueSessions = function (data) {
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let resArr = [];
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let resArrIDS = [];
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for (let item of data) {
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if (resArrIDS.indexOf(item.sessionID) < 0) {
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resArr.push(item);
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resArrIDS.push(item.sessionID);
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}
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}
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return resArr;
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}
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const getAvailableRooms = async function () {
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return io.of('/').adapter.allRooms();
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}
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const respond = function (res, data) {
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let result = {data}
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if (process.env.uws !== "true") {
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res.statusCode = 200;
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res.setHeader('Content-Type', 'application/json');
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res.end(JSON.stringify(result));
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} else {
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res.writeStatus('200 OK').writeHeader('Content-Type', 'application/json').end(JSON.stringify(result));
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}
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}
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const socketsList = async function (req, res) {
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debug && console.log("[WS]looking for all available sessions");
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let filters = await extractPayloadFromRequest(req, res);
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let liveSessions = {};
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let rooms = await getAvailableRooms();
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for (let peerId of rooms) {
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let {projectKey, sessionId} = extractPeerId(peerId);
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if (projectKey !== undefined) {
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liveSessions[projectKey] = liveSessions[projectKey] || [];
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if (hasFilters(filters)) {
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const connected_sockets = await io.in(peerId).fetchSockets();
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for (let item of connected_sockets) {
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if (item.handshake.query.identity === IDENTITIES.session && item.handshake.query.sessionInfo
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&& isValidSession(item.handshake.query.sessionInfo, filters.filter)) {
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liveSessions[projectKey].push(sessionId);
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}
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}
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} else {
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liveSessions[projectKey].push(sessionId);
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}
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}
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}
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respond(res, liveSessions);
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}
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const socketsListByProject = async function (req, res) {
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debug && console.log("[WS]looking for available sessions");
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let _projectKey = extractProjectKeyFromRequest(req);
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let _sessionId = extractSessionIdFromRequest(req);
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let filters = await extractPayloadFromRequest(req, res);
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let liveSessions = {};
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let rooms = await getAvailableRooms();
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for (let peerId of rooms) {
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let {projectKey, sessionId} = extractPeerId(peerId);
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if (projectKey === _projectKey && (_sessionId === undefined || _sessionId === sessionId)) {
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liveSessions[projectKey] = liveSessions[projectKey] || [];
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if (hasFilters(filters)) {
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const connected_sockets = await io.in(peerId).fetchSockets();
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for (let item of connected_sockets) {
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if (item.handshake.query.identity === IDENTITIES.session && item.handshake.query.sessionInfo
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&& isValidSession(item.handshake.query.sessionInfo, filters.filter)) {
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liveSessions[projectKey].push(sessionId);
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}
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}
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} else {
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liveSessions[projectKey].push(sessionId);
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}
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}
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}
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liveSessions[_projectKey] = liveSessions[_projectKey] || [];
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respond(res, _sessionId === undefined ? liveSessions[_projectKey]
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: liveSessions[_projectKey].length > 0 ? liveSessions[_projectKey][0]
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: null);
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}
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const socketsLive = async function (req, res) {
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debug && console.log("[WS]looking for all available LIVE sessions");
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let filters = await extractPayloadFromRequest(req, res);
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let liveSessions = {};
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let rooms = await getAvailableRooms();
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for (let peerId of rooms) {
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let {projectKey} = extractPeerId(peerId);
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if (projectKey !== undefined) {
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let connected_sockets = await io.in(peerId).fetchSockets();
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for (let item of connected_sockets) {
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if (item.handshake.query.identity === IDENTITIES.session) {
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liveSessions[projectKey] = liveSessions[projectKey] || [];
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if (hasFilters(filters)) {
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if (item.handshake.query.sessionInfo && isValidSession(item.handshake.query.sessionInfo, filters.filter)) {
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liveSessions[projectKey].push(item.handshake.query.sessionInfo);
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}
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} else {
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liveSessions[projectKey].push(item.handshake.query.sessionInfo);
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}
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}
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}
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liveSessions[projectKey] = uniqueSessions(liveSessions[projectKey]);
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}
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}
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respond(res, sortPaginate(liveSessions, filters));
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}
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const socketsLiveByProject = async function (req, res) {
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debug && console.log("[WS]looking for available LIVE sessions");
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let _projectKey = extractProjectKeyFromRequest(req);
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let _sessionId = extractSessionIdFromRequest(req);
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let filters = await extractPayloadFromRequest(req, res);
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let liveSessions = {};
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let rooms = await getAvailableRooms();
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for (let peerId of rooms) {
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let {projectKey, sessionId} = extractPeerId(peerId);
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if (projectKey === _projectKey && (_sessionId === undefined || _sessionId === sessionId)) {
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let connected_sockets = await io.in(peerId).fetchSockets();
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for (let item of connected_sockets) {
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if (item.handshake.query.identity === IDENTITIES.session) {
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liveSessions[projectKey] = liveSessions[projectKey] || [];
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if (hasFilters(filters)) {
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if (item.handshake.query.sessionInfo && isValidSession(item.handshake.query.sessionInfo, filters.filter)) {
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liveSessions[projectKey].push(item.handshake.query.sessionInfo);
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}
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} else {
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liveSessions[projectKey].push(item.handshake.query.sessionInfo);
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}
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}
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}
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liveSessions[projectKey] = uniqueSessions(liveSessions[projectKey] || []);
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}
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}
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liveSessions[_projectKey] = liveSessions[_projectKey] || [];
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respond(res, _sessionId === undefined ? sortPaginate(liveSessions[_projectKey], filters)
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: liveSessions[_projectKey].length > 0 ? liveSessions[_projectKey][0]
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: null);
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}
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const autocomplete = async function (req, res) {
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debug && console.log("[WS]autocomplete");
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let _projectKey = extractProjectKeyFromRequest(req);
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let filters = await extractPayloadFromRequest(req);
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let results = [];
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if (filters.query && Object.keys(filters.query).length > 0) {
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let rooms = await getAvailableRooms();
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for (let peerId of rooms) {
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let {projectKey} = extractPeerId(peerId);
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if (projectKey === _projectKey) {
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let connected_sockets = await io.in(peerId).fetchSockets();
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for (let item of connected_sockets) {
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if (item.handshake.query.identity === IDENTITIES.session && item.handshake.query.sessionInfo) {
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results = [...results, ...getValidAttributes(item.handshake.query.sessionInfo, filters.query)];
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}
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}
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}
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}
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}
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respond(res, uniqueAutocomplete(results));
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}
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const findSessionSocketId = async (io, peerId) => {
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const connected_sockets = await io.in(peerId).fetchSockets();
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for (let item of connected_sockets) {
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if (item.handshake.query.identity === IDENTITIES.session) {
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return item.id;
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}
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}
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return null;
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};
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async function sessions_agents_count(io, socket) {
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let c_sessions = 0, c_agents = 0;
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let rooms = await io.of('/').adapter.allRooms();
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if (rooms.has(socket.peerId)) {
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const connected_sockets = await io.in(socket.peerId).fetchSockets();
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for (let item of connected_sockets) {
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if (item.handshake.query.identity === IDENTITIES.session) {
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c_sessions++;
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} else {
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c_agents++;
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}
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}
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} else {
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c_agents = -1;
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c_sessions = -1;
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}
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return {c_sessions, c_agents};
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}
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async function get_all_agents_ids(io, socket) {
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let agents = [];
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let rooms = await io.of('/').adapter.allRooms();
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if (rooms.has(socket.peerId)) {
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const connected_sockets = await io.in(socket.peerId).fetchSockets();
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for (let item of connected_sockets) {
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if (item.handshake.query.identity === IDENTITIES.agent) {
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agents.push(item.id);
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}
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}
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}
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return agents;
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}
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wsRouter.get(`/sockets-list`, socketsList);
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wsRouter.post(`/sockets-list`, socketsList);
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wsRouter.get(`/sockets-list/:projectKey/autocomplete`, autocomplete);
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wsRouter.get(`/sockets-list/:projectKey`, socketsListByProject);
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wsRouter.post(`/sockets-list/:projectKey`, socketsListByProject);
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wsRouter.get(`/sockets-list/:projectKey/:sessionId`, socketsListByProject);
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wsRouter.get(`/sockets-live`, socketsLive);
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wsRouter.post(`/sockets-live`, socketsLive);
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wsRouter.get(`/sockets-live/:projectKey/autocomplete`, autocomplete);
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wsRouter.get(`/sockets-live/:projectKey`, socketsLiveByProject);
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wsRouter.post(`/sockets-live/:projectKey`, socketsLiveByProject);
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wsRouter.get(`/sockets-live/:projectKey/:sessionId`, socketsLiveByProject);
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module.exports = {
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wsRouter,
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start: (server, prefix) => {
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createSocketIOServer(server, prefix);
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io.on('connection', async (socket) => {
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debug && console.log(`WS started:${socket.id}, Query:${JSON.stringify(socket.handshake.query)}`);
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socket.peerId = socket.handshake.query.peerId;
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socket.identity = socket.handshake.query.identity;
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let {c_sessions, c_agents} = await sessions_agents_count(io, socket);
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if (socket.identity === IDENTITIES.session) {
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if (c_sessions > 0) {
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debug && console.log(`session already connected, refusing new connexion`);
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io.to(socket.id).emit(SESSION_ALREADY_CONNECTED);
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return socket.disconnect();
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}
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extractSessionInfo(socket);
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if (c_agents > 0) {
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debug && console.log(`notifying new session about agent-existence`);
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let agents_ids = await get_all_agents_ids(io, socket);
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io.to(socket.id).emit(AGENTS_CONNECTED, agents_ids);
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socket.to(socket.peerId).emit(SESSION_RECONNECTED, socket.id);
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}
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} else if (c_sessions <= 0) {
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debug && console.log(`notifying new agent about no SESSIONS`);
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io.to(socket.id).emit(NO_SESSIONS);
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}
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await io.of('/').adapter.remoteJoin(socket.id, socket.peerId);
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let rooms = await io.of('/').adapter.allRooms();
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if (rooms.has(socket.peerId)) {
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let connectedSockets = await io.in(socket.peerId).fetchSockets();
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debug && console.log(`${socket.id} joined room:${socket.peerId}, as:${socket.identity}, members:${connectedSockets.length}`);
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}
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if (socket.identity === IDENTITIES.agent) {
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if (socket.handshake.query.agentInfo !== undefined) {
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socket.handshake.query.agentInfo = JSON.parse(socket.handshake.query.agentInfo);
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}
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socket.to(socket.peerId).emit(NEW_AGENT, socket.id, socket.handshake.query.agentInfo);
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}
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socket.on('disconnect', async () => {
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debug && console.log(`${socket.id} disconnected from ${socket.peerId}`);
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if (socket.identity === IDENTITIES.agent) {
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socket.to(socket.peerId).emit(AGENT_DISCONNECT, socket.id);
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}
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debug && console.log("checking for number of connected agents and sessions");
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let {c_sessions, c_agents} = await sessions_agents_count(io, socket);
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if (c_sessions === -1 && c_agents === -1) {
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debug && console.log(`room not found: ${socket.peerId}`);
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}
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if (c_sessions === 0) {
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debug && console.log(`notifying everyone in ${socket.peerId} about no SESSIONS`);
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socket.to(socket.peerId).emit(NO_SESSIONS);
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}
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if (c_agents === 0) {
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debug && console.log(`notifying everyone in ${socket.peerId} about no AGENTS`);
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socket.to(socket.peerId).emit(NO_AGENTS);
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}
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});
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socket.on(UPDATE_EVENT, async (...args) => {
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debug && console.log(`${socket.id} sent update event.`);
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if (socket.identity !== IDENTITIES.session) {
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debug && console.log('Ignoring update event.');
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return
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}
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socket.handshake.query.sessionInfo = {...socket.handshake.query.sessionInfo, ...args[0]};
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socket.to(socket.peerId).emit(UPDATE_EVENT, args[0]);
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});
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socket.onAny(async (eventName, ...args) => {
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if (socket.identity === IDENTITIES.session) {
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debug && console.log(`received event:${eventName}, from:${socket.identity}, sending message to room:${socket.peerId}`);
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socket.to(socket.peerId).emit(eventName, args[0]);
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} else {
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debug && console.log(`received event:${eventName}, from:${socket.identity}, sending message to session of room:${socket.peerId}`);
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let socketId = await findSessionSocketId(io, socket.peerId);
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if (socketId === null) {
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debug && console.log(`session not found for:${socket.peerId}`);
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io.to(socket.id).emit(NO_SESSIONS);
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} else {
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debug && console.log("message sent");
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io.to(socketId).emit(eventName, socket.id, args[0]);
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}
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}
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});
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});
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console.log("WS server started")
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setInterval(async (io) => {
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try {
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let rooms = await io.of('/').adapter.allRooms();
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let validRooms = [];
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console.log(` ====== Rooms: ${rooms.size} ====== `);
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// const arr = Array.from(rooms)
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// const filtered = arr.filter(room => !room[1].has(room[0]))
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for (let i of rooms) {
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let {projectKey, sessionId} = extractPeerId(i);
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if (projectKey !== undefined && sessionId !== undefined) {
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validRooms.push(i);
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}
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}
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console.log(` ====== Valid Rooms: ${validRooms.length} ====== `);
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if (debug) {
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for (let item of validRooms) {
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let connectedSockets = await io.in(item).fetchSockets();
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console.log(`Room: ${item} connected: ${connectedSockets.length}`)
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}
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}
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} catch (e) {
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console.error(e);
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}
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}, 20000, io);
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Promise.all([pubClient.connect(), subClient.connect()])
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.then(() => {
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io.adapter(createAdapter(pubClient, subClient));
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console.log("> redis connected.");
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})
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.catch((err) => {
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console.log("> redis connection error");
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debug && console.error(err);
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process.exit(2);
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});
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},
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handlers: {
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socketsList,
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socketsListByProject,
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socketsLive,
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socketsLiveByProject,
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autocomplete
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}
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}; |